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Screamer 2
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Post new topic   Reply to topic    Difflock Forum Index -> 4x4s -> Custom Builds
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Eclipsed4ever
Just got MTs


Joined: 05 May 2012
Odometer: 190
Location: Hereford



PostPosted: Wed Apr 23, 2014 7:13 pm    Post subject: Reply with quote

Well it's been a wee while since I've updated this, main reason for that being I've not done much lately. Embarassed

I've managed to pull my finger out today and crack on a bit.

The first axle is looking much healthier now. The top and bottom mounts are on both side and I've got the camber/castor angles I was aiming at. The brakes fit well under the wheels and have full contact with the pads.







I couldn't resist the temptation to fit some wheels on it and see what it looked like.





From the diff cover to the floor is 16" with my 32" alligators on. This is more than I was expecting to be honest. Think I've squeezed a little more angle out of the shafts. There is room for switching the hubs around slightly if it's a little to much but hopefully they'll be fine.





I've started tacking up the second axle. I've got about as far as I can until I get the steering rams back. I can't mount the diff in until I know how much room they're going to take.

The triangles won't be long behind that. Again I'm waiting for the steering rams to arrive before I can finalise the plans for these as I need to cut holes for the rods to pass through.[/img]

__________________________________
2.2 Vtec 4WS Single Seater - aka Screamer - UK Champion 2013 + 2014
3.0lr V6 4WS - Screamer 2 - UK Champion 2015 + 2016 + 2017
Eurotrial 2nd in Prototype Class 2018
https://www.facebook.com/ScreamerOffroad
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Eclipsed4ever
Just got MTs


Joined: 05 May 2012
Odometer: 190
Location: Hereford



PostPosted: Wed Jun 18, 2014 8:33 pm    Post subject: Reply with quote

Again it's been a wee while - I've been pretty busy trialling with Screamer and getting it prepped for KOV. Unfortunately that's not left me much time to progress with this.

Anyway - the second axle is also tacked up now. I've had to break down the first one to better align it as I made a slight oversight the first time. I've made up the first triangle and I think it's looking good.







Since taking the photos I've changes the Ballistic joint mount. I wasn't happy relying on 3mm box section so I've made some 5mm plate mounts instead.

I intend on making the two triangles the same and once that's done I can make up the main body mount for the axles. This will determine the wheelbase which I'm going to up from Screamers 95" to more like 98"-99". This is because I haven't encountered any problems with maneuverability in the UK's normal trials, but I think climbing could be improved by being a little longer.

I bought the Ballistic mounts to go with the joints so it should be pretty straightforward to join the two together. Then the fun bit - chassis!

__________________________________
2.2 Vtec 4WS Single Seater - aka Screamer - UK Champion 2013 + 2014
3.0lr V6 4WS - Screamer 2 - UK Champion 2015 + 2016 + 2017
Eurotrial 2nd in Prototype Class 2018
https://www.facebook.com/ScreamerOffroad
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Eclipsed4ever
Just got MTs


Joined: 05 May 2012
Odometer: 190
Location: Hereford



PostPosted: Sun Jun 29, 2014 9:16 pm    Post subject: Reply with quote

Made some progress since the last post.

I've made the second axle triangle and tacked all that up. Both are looking good now. I've beefed up the ballistic mounts as described in the last post. These are now both complete although they will need extra bracing to the triangle.

More excitingly (in my opinion :p ) I've now started the chassis. I'm using the bend tech software to give me the bending instructions and my god it makes life easier. It's really worth every penny when doing anything remotely complex. My chassis is made of 2 rails which are a mirror of each other, and just to make it a little more taxing, they slot together - not something I would of been happy tackling before. But now...

First rail:


Nose section (this was actually the first part I bent up before the much more complicated chassis rails):


First slot together - sleeved with some old roll cage Smile :


Now butted up properly and tacked. Engine also in position slightly off center. This is to straighten up the props slightly and give room for a fuel tank and other gubbins down the left hand side:


First engine mount:


Second engine mount:


Ballistic joints complete:


Ballistic mounts complete - Should give approx 98" wheelbase:



I'm reasonably happy with the engine position both laterally and longitudally. I've got much more room in the driver seat, mainly down to the longer nose. The engine is almost central so weight distribution should be good.

This time I'm going to fit the radiator/oil cooler in the rear middle to give better visibility and made ducting cold air during speed events much easier. I might also be able to fit a bigger rad than I have bought which is always good.

Anyway, next I need the rear engine mount in which will hold the engine steady. The front mount will sit on top of the ballistic mount rail. I've done the mounts first as it's much easier to do with it all sat on the floor. Next I'll mount the ballistic rail on which will dictate body position in relation to the wheels. I'll be pushing it all as far forward as I can - this will be dependent on approach angle and air shock mounts.

I should (finally) be picking my steering rams up Tuesday so I can get on and mount them, some steering arms and eventually the diffs. The axles can then be welded up.

Can't wait to get the chassis sat on the axles Very Happy

__________________________________
2.2 Vtec 4WS Single Seater - aka Screamer - UK Champion 2013 + 2014
3.0lr V6 4WS - Screamer 2 - UK Champion 2015 + 2016 + 2017
Eurotrial 2nd in Prototype Class 2018
https://www.facebook.com/ScreamerOffroad
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(pete)
Mud Obsessed


Joined: 19 Nov 2006
Odometer: 5805
Location: aldershot



PostPosted: Sun Jun 29, 2014 9:56 pm    Post subject: Reply with quote

It's looking sweet wish I had the time for a project like this

One question though what's a ballistic mount with out sounding stupid but not heard that before

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X-RATED 4x4 systems
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Eclipsed4ever
Just got MTs


Joined: 05 May 2012
Odometer: 190
Location: Hereford



PostPosted: Mon Jun 30, 2014 8:13 am    Post subject: Reply with quote

The ballistic joints are shown in the second post of this thread. Previously I've used weld on category 2 tractor joints. They work fine and are pretty hardy but the knocking they make when they've worn a little do my head in.

The ballistics are fully rebuildable and fitting new bushes is easy peasy. They also give a very similar amount of travel.

Here they are:

https://www.ballisticfabrication.com/mobile/Forged-Ballistic-Joints-Bushings_c_141.html#page-65

__________________________________
2.2 Vtec 4WS Single Seater - aka Screamer - UK Champion 2013 + 2014
3.0lr V6 4WS - Screamer 2 - UK Champion 2015 + 2016 + 2017
Eurotrial 2nd in Prototype Class 2018
https://www.facebook.com/ScreamerOffroad
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Eclipsed4ever
Just got MTs


Joined: 05 May 2012
Odometer: 190
Location: Hereford



PostPosted: Wed Sep 03, 2014 11:14 pm    Post subject: Reply with quote

I've made some progress since the previous post. Now Eurotrial and KoV are passed I can concentrate on getting on now.

So, the chassis is welded together and it all fits quite nicely. The nose section is on to.

Once that was welded up I've attached the ballistic mounts and got it all sat there with the axles under. With the wheelbase set I got on the case of positioning the motor. This was largely dictated by the props - mainly the rear. Using the standard shaft (worst case) I've got it in about the optimum position whilst still leaving a comfortable cockpit. If I have problems I can get a shaft made up that will allow a longer rear prop.

I've started on the controls. The gear selector is in and fits nicely. I've fitted the master cylinder with a clutch slave cylinder to hopefully allow me to mount all that low and out the way. It's a heavy and awkward lump so I didn't really want it on the dash.

The radiator is also fitted. I've gone for a much bigger rad this time as I had a few heating issues during KoV. It's a 50mm core and bigger overall. That coupled with a 19" fan I don't think I'll have any issues in the future. It's also mounted much more in the open rather than in the bodywork like Screamer 1.

I'm going to try and complete the controls as the next job really then it could be the rest of the cage.

I'm also waiting on a load of clevis's to match my 3/4" rose joints. Once I have them I can fit the steering rams and panard rods. I can then finally finish off the axles.

Starting to look like a truck Very Happy


Pictures are being a pest on here still so I've also made a facebook page which is where all the photos will go to. Feel free to have a butchers:

https://www.facebook.com/ScreamerOffroad

__________________________________
2.2 Vtec 4WS Single Seater - aka Screamer - UK Champion 2013 + 2014
3.0lr V6 4WS - Screamer 2 - UK Champion 2015 + 2016 + 2017
Eurotrial 2nd in Prototype Class 2018
https://www.facebook.com/ScreamerOffroad
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Eclipsed4ever
Just got MTs


Joined: 05 May 2012
Odometer: 190
Location: Hereford



PostPosted: Fri Oct 10, 2014 7:31 pm    Post subject: Reply with quote

It's been a while since I've updated this (sorry). For those of you who haven't seen the facebook page I'll try and get them to appear here - might be easier now the new ones are all public anyway. *edit* apparently not, a link is the best I can manage at the moment?!

I've bought the orbital and rear steer valves. The orbital should allow return to center which will be better for speed events. Screamer was OK at KoV but I did find I was almost always correcting it on the straights.

https://scontent-a-ams.xx.fbcdn.net/hphotos-xaf1...a&oe=54BBF185

Main loop and first lateral bar:

https://fbcdn-sphotos-a-a.akamaihd.net/hphotos-a...7f0adc86ff9cf9ff9

https://scontent-a-ams.xx.fbcdn.net/hphotos-xpa1...3&oe=54B08940

Some custom pedals and the brake master-master cylinder.

https://scontent-b-ams.xx.fbcdn.net/hphotos-xpa1...5&oe=54F5B9D6

https://scontent-a-ams.xx.fbcdn.net/hphotos-xpa1...4&oe=54C82E80

Master cylinder with slave cylinder attached. I've still yet to pipe this up and see if it works. Fingers crossed it does! I do have a plan B but it's not half as nice as this if it works.

https://scontent-a-ams.xx.fbcdn.net/hphotos-xfa1...c&oe=54F7E3D7

Moosive radiator mounted + 19" fan.

https://scontent-a-ams.xx.fbcdn.net/hphotos-xpa1...3&oe=54B797CD

https://fbcdn-sphotos-f-a.akamaihd.net/hphotos-a...910f7ae0646df6c50

https://scontent-a-ams.xx.fbcdn.net/hphotos-xpa1...38906726313_o.jpg

Replacement main crank pulley. MUCH lighter than the standard one and as it's an 'underdrive' pulley, all the ancillaries turn slowed. Should save a few wasted horsies.

https://scontent-b-ams.xx.fbcdn.net/hphotos-xap1...6&oe=54F6BAF1

Front half of the cage tacked up.

https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-a...3403134c003638b3c

And as she is today - full main cage tacked up. There's still a few bars to put in about the place, but largely I'm very happy with how it is.

https://fbcdn-sphotos-e-a.akamaihd.net/hphotos-a...72bf6df1232e44383

https://scontent-a-ams.xx.fbcdn.net/hphotos-xpa1...3&oe=54BE3EEE

https://fbcdn-sphotos-b-a.akamaihd.net/hphotos-a...43e6000ddb99ddbe8

https://scontent-b-ams.xx.fbcdn.net/hphotos-xpa1...1&oe=54F4F848

https://scontent-a-ams.xx.fbcdn.net/hphotos-xaf1...9&oe=54B8FDE1

https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-a...53a7f968c14ba23dd

https://fbcdn-sphotos-f-a.akamaihd.net/hphotos-a...8c683a8fd86da8202

Compared to the design - not bad Smile




So, the main cage is tacked up. I've yet to decide how I'm going to brace the main hoop - 1 diagonal or using two more upright bars which I'm allowed to do as it's rear engined. I also need to check the rules on what roof diagonals I will need for future events.

I'm STILL waiting on the clevis's although I've now been promised these by Wednesday. Fingers Crossed! Once I've got those it's on with panard rods and all the steering arms. Once thats all done, air shocks on and it should actually be able to sit on wheels then - can wait!

I've still yet to do anything about fuel tank, oil reservoir or hydraulic lines. These will be once it's sat on it's wheels I think. I'll get some more motivation when it looks like a truck Smile

__________________________________
2.2 Vtec 4WS Single Seater - aka Screamer - UK Champion 2013 + 2014
3.0lr V6 4WS - Screamer 2 - UK Champion 2015 + 2016 + 2017
Eurotrial 2nd in Prototype Class 2018
https://www.facebook.com/ScreamerOffroad
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RL12
Just got MTs


Joined: 22 Aug 2010
Odometer: 297
Location: Devon/Shropshire


1987 Daihatsu Fourtrak

PostPosted: Sat Oct 11, 2014 12:05 pm    Post subject: Reply with quote

nice work! really interesting project.
what's the timescale for the project and what program did you use for the frame design?

__________________________________
Fourtrak/LJ70 project
Youtube: FourtrakRich
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Eclipsed4ever
Just got MTs


Joined: 05 May 2012
Odometer: 190
Location: Hereford



PostPosted: Tue Oct 14, 2014 6:15 pm    Post subject: Reply with quote

Thanks very much. Well I was hoping for the end of this year but unless things go exceptionally well I can't see that happening. Certainly within the first few months of next year though as I intend on it being thoroughly tested before the start of the nationals next year.

I'm using 'bendtech PRO'. Excellent program to be fair. Cost about £130 or so I think it was. Decided as I was using CDS it might save wasting too much tube messing around. It's done exactly that as well as making the actual bending process 10 times easier. I'd highly recommend it to anyone doing a reasonable amount of tube work.

Right then, after reading through the MSA, Ultra4 and Eurotrial rules, I've decided I need a diagonal in the main B-Pillar. I was hoping to get away without this as it's going to be tight past the engine. Unfortunately it's required for U4 though so it's got to go in. I've also enquired as to whether I can do a triangle in the roof instead of a diagonal. It looks like that won't be a problem so that's what I'll do. It's only really to gain a little bit of head room. I'd have enough with a diagonal, it's just theres more like this. It also should make the roof panel better looking (hopefully).

So, design modification with diagonal + roof triangle.



Actual diagonal - loads of room! Shocked


__________________________________
2.2 Vtec 4WS Single Seater - aka Screamer - UK Champion 2013 + 2014
3.0lr V6 4WS - Screamer 2 - UK Champion 2015 + 2016 + 2017
Eurotrial 2nd in Prototype Class 2018
https://www.facebook.com/ScreamerOffroad
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View user's profile Send private message Visit poster's website MSN Messenger
Eclipsed4ever
Just got MTs


Joined: 05 May 2012
Odometer: 190
Location: Hereford



PostPosted: Mon Oct 27, 2014 8:11 pm    Post subject: Reply with quote

I've put nearly 2 days into the rear end and it's really paid off. The Steering ram is mounted with equal length track rods and solid hub mounts to be gusseted later. I've set it up to give 30• on outside wheel, 32• on inside wheel. This is a very slight use of 'ackerman steering'. Should help turning circle in grippy conditions. Every little helps!

https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-xap1/v/t1.0-9/1545014_1548734468694647_5983495853565492083_n.jpg?oh=74f1a20b32c3abf4dbc1f3c052e233e9&oe=54F6911C&__gda__=1424775872_3b7113e8d9defdc8bae6f28cfb9b59be

https://scontent-b-ams.xx.fbcdn.net/hphotos-xap1/v/t1.0-9/10289827_1548734682027959_8668196025233040607_n.jpg?oh=993c43cfe1de685796464897f0923216&oe=54EAF87C

https://fbcdn-sphotos-d-a.akamaihd.net/hphotos-ak-xfp1/v/t1.0-9/10557200_1548734762027951_6223762508271529558_n.jpg?oh=b6952835f36294da9a511cb5c09c5530&oe=54DF4393&__gda__=1423969987_e692f1d8542965c4b456c192f396a41d

The ackerman steering principle basically takes into account the different arcs that the inner wheel and outer wheel must follow in order to steer round a point without having to break traction. If I didn't have lockers I would of made more effort to get it spot on, but with the added stresses on the inner CV which needs to turn tighter, and the lockers on top, I didn't want to push it. Reliability shouldn't be compromised for anything. There's load of information out there if you search it.



OK so the rear diff is also mounted. I've turned the ****• towards the prop which will greatly help the angles of the prop joints. Still yet to sort out some props yet though. I'm leaning towards some from Bailey Morris once I can firm up dimensions.

https://scontent-a-ams.xx.fbcdn.net/hphotos-xpa1/v/t1.0-9/1551646_1548734845361276_4012606632218880688_n.jpg?oh=bc4804b65a492464b5481eb6f17c2b32&oe=54AB83F5

https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-xfa1/v/t1.0-9/1959495_1548734935361267_3045379699568525038_n.jpg?oh=cbe02951bad3136c6df210df7ce386ec&oe=54ACC35B&__gda__=1421093997_44663b1af07aaaee928d258772a98d64

The panard rod is also tacked up. The axle isn't quite central at the moment but can't move it as the body is balanced on it, but it's all pretty close. The axle mount is a bit ugly so I might do something else in the future, it won't move though

https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-xaf1/v/t1.0-9/10356756_1548735082027919_5764614353317218248_n.jpg?oh=f5d5b2d8516ebf312d35d2406b9bb154&oe=54AF40D0&__gda__=1420668519_16c130959e06f427204a20af97fea274

[img]https://scontent-a-ams.xx.fbcdn.net/hphotos-xaf1/v/t1.0-9/1503233_1548735142027913_732793107144018086_n.jpg?oh=5cad216a8c2adbce5f04981d504da0e0&oe=54E8C8BB[/img]

Lastly got the rear shock mounts tacked up. Can't get the bottom mounts on as the wood is in the way. Need to prop the body up to move them out the way.

https://scontent-b-ams.xx.fbcdn.net/hphotos-xfp1/v/t1.0-9/1902048_1548735262027901_518339449296626009_n.jpg?oh=f7548d14a71448aa89a28f1e88027e06&oe=54AF1DF9

https://fbcdn-sphotos-d-a.akamaihd.net/hphotos-ak-xap1/v/t1.0-9/10153909_1548735305361230_4870152919136234183_n.jpg?oh=e14c6b39ab5a895b3a91ed376dcbaf01&oe=54E02ED8&__gda__=1421180897_3d9044a9a32c3923c78f4c239a7e209d

https://fbcdn-sphotos-e-a.akamaihd.net/hphotos-ak-xap1/v/t1.0-9/1374799_1548735432027884_2199047522187310591_n.jpg?oh=d034fbc6684d249d0ce365d209bf0392&oe=54AE019E&__gda__=1424404546_90db5df8fa6056e7bf59c216ca455ac8

All in all a pretty productive weekend Once I can do the same work to the front she'll be able to stand on her own 4 feet!

__________________________________
2.2 Vtec 4WS Single Seater - aka Screamer - UK Champion 2013 + 2014
3.0lr V6 4WS - Screamer 2 - UK Champion 2015 + 2016 + 2017
Eurotrial 2nd in Prototype Class 2018
https://www.facebook.com/ScreamerOffroad
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Eclipsed4ever
Just got MTs


Joined: 05 May 2012
Odometer: 190
Location: Hereford



PostPosted: Tue Apr 14, 2015 8:59 pm    Post subject: Reply with quote

Well it's been a long while since my last update. Hopefully some of you have been following my progress on the Screamer Offroad facebook page, but for the others, this is where I am...

Screamer 2 is up and running and already covered 2 national rounds at Slindon 2 weeks ago. Time was pretty short for final assembly as I was waiting for my mini-spool to go in the gearbox before I could put it all together. An extremely busy few days and it was tested round the yard and loaded up on the Saturday night ready for round 1 on the Sunday.

Here she is in probably the cleanest condition she's ever likely to be in!









So the final spec in the trial gear:

Honda 3.0lr V6 Vtec.
2 link suspension front and rear.
Custom live axles giving 19" of diff clearance.
Fox 14" air shocks all round.
40" Trepador stickies.
Custom 17" beadlocks.
Full independent, hydraulic 4 wheel steer.
Front and rear difflocks.

So the first round went very well. The first time the truck saw dirt was section 1. There were a couple of hairy moments in the morning before I tweaked the suspension a little to make it a little more stable. After that, I had 1 tyre go flat and pushed off the rim in the afternoon. Overall though only little niggly problems which caused me no serious issues. With a steady day I ended up winning round 1. Not bad for the first day out! I think chuffed is the word!





Round 2 went well as well with the truck performing flawlessly. The only issue I had was some foolish driving and passing a gate 2 illegally. This put me out the running for the day so instead I decided to push the truck a bit harder. Picking some of the more difficult routes and unleashing the V6 a bit more, I had a great day and ended every section with a smile on my face. 3rd place was the final result for round 2.





Back home Very Happy




__________________________________
2.2 Vtec 4WS Single Seater - aka Screamer - UK Champion 2013 + 2014
3.0lr V6 4WS - Screamer 2 - UK Champion 2015 + 2016 + 2017
Eurotrial 2nd in Prototype Class 2018
https://www.facebook.com/ScreamerOffroad
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View user's profile Send private message Visit poster's website MSN Messenger
Eclipsed4ever
Just got MTs


Joined: 05 May 2012
Odometer: 190
Location: Hereford



PostPosted: Tue Apr 14, 2015 9:05 pm    Post subject: Reply with quote





Testing at home...



Buddies Very Happy






So the next main event is a playday at Walters this Sunday. This should give a good test of the cooling system and a reasonable range test of the fuel system. Hopefully there will be a few of us there for a play Smile

Next competition will be the next two national rounds at Corwen in North Wales on the next bank holiday weekend. After that though it's Driven to the Edge back at Walters Arena. For this I intend on fitting a mile marker to aid with the special stages. I've knocked up a winch cradle which fits into some mounts behind the panels. This is fully removable...

It's not sexy, but here is it...




__________________________________
2.2 Vtec 4WS Single Seater - aka Screamer - UK Champion 2013 + 2014
3.0lr V6 4WS - Screamer 2 - UK Champion 2015 + 2016 + 2017
Eurotrial 2nd in Prototype Class 2018
https://www.facebook.com/ScreamerOffroad
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View user's profile Send private message Visit poster's website MSN Messenger
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