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September 21, 2020, 03:04:52 AM

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Messages - PhillipM

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31
Members Buggies / Re: A mucky one - racing rail.
« on: March 25, 2019, 09:58:38 PM »
Gets a bit tricky if you have to stop on stage though, or there's a delay while starting a stage and you're sat in a queue shunting - for the alt it's only 2bhp at most - better off running the alternator and a nice tiny 3kg battery instead of the usual 20kg lead-acid - power isn't an issue really any more with this engine, I deliberately limited this setup as we don't have enough traction for more (it will still be spinning the rear wheels at 100mph+ going by the sims) and I want to protect the gearbox - there's enough spare capacity in the intercooler, charger, etc, to wind it well north of 500bhp if the gearbox ever got some upgrades.

Shock canisters done - light and simple to make, and easy to swap fittings for the different hoses:




32
Members Buggies / Re: A mucky one - racing rail.
« on: March 25, 2019, 09:16:16 PM »
5-15 minutes per stage, 5-10 stages per day. Some events are 2 days...

33
Members Buggies / Re: A mucky one - racing rail.
« on: March 25, 2019, 04:36:07 PM »
50 amp load from the power steering, 30 amps for the cooling fans, 15amps for the fuel pump, 30 for the washers and wipers, 30 amps for the ECU, dash, coils, injectors, solonoids, running lights, etc - that's before you add 30/40 amps for a light pods if it's a dark race.

Soon adds up, you need a beefy alt to keep on top of it, even with some of it being intermittent.

34
Members Buggies / Re: A mucky one - racing rail.
« on: March 25, 2019, 11:06:10 AM »
Yep, wasted quite a lot of time and effort just down to that  >:(

Even if you don't get an ECU controlled or smart charge alternator you can still fall foul of 'em!
 Anywya, done now, was a very happy chap yesterday,  I've already built 95% of the map so just need to head to a dyno for running in and fine tweaking.

35
Members Buggies / Re: A mucky one - racing rail.
« on: March 25, 2019, 03:10:20 AM »
Well, just as we thought we were sorted - the car ran fine when fired up - the intermittent starting reared it's head again, been tracking that down again over a couple of weekends - traced it down to what we thought was the alternator or the ballast, so I pulled the loom apart and added a larger ballast to the field coil, no difference, bought a new alternator - no difference. Take alternator off, starts fine.
Much head scratching.

Turns out the alternators we were getting from the local supplier (an electrical specialist, not just a factors) - were basically noisy as hell when they were trying to get to the right voltage at low rpms (i,e - startup only) - a cap in the line doesn't fix it, some shielding might but we've just sacked it off and got a different type of alternator instead, need to alter things to get that to fit properly again now, but after rigging it up today it's purring like a kitten. Need to retime it now though as not certain it was 100% before as it idles smoother now.

It never rains, it pours!

On the upside, I was rebuilding some other dampers* so I rebuilt/revalved the rears on ours to suit the new arms and bled them, so that's one more job off the list and ready to go - although I have just acquired some new go faster parts to machine and fit - I got told these were top secret so...there we go:



It's all very well getting shiny adjustable parts for your dampers but then you have to spend hours modelling the damned things - nearly there, housings next.
These are high and low speed compression adjusters, that hopefully with a bit of work on my side will be adaptable enough to use both on the small fronts and large rear dampers...hopefully.




36
Members Buggies / Re: A mucky one - racing rail.
« on: February 02, 2019, 04:20:30 AM »
Well I spent two hours today fine tuning the idle fuelling and timing, and put the cold weather to good use to tune the cold tip-in settings (same as accelerator pump in a carb) - and got it blipping cleanly from cold with some beans. Also set up the camera to get some better video.

Then I spent 2 hours slithering home in the snow (it's only 10 miles) - including 30 minutes just getting up the 100m of farm track. I had to keep shoving my floor mats under the wheels, it was solid ice. I even put the car in drive at one point (tiptronic) and got out and pushed it as well :D

Then, when I got back, I downloaded the video to find....it's corrupted. I've got the first minute (cranking it over and tweaking the cold start) and the last minute (the engine ticking as it cools down 'cause it's off) and nothing in between  ;D

37
Members Buggies / Re: A mucky one - racing rail.
« on: January 30, 2019, 03:59:12 PM »
Nearly all of this in single phase to be honest, as we had poor electric where were used to have the tin shed (it was basically just a cable ran down from someone's stable block which itself fed down from the house). The only thing is a new welder we just bought and the lift in the front are 3-phase but they aren't for the buggy.

38
Members Buggies / Re: A mucky one - racing rail.
« on: January 30, 2019, 01:38:59 AM »
We started making this in a shed we'd made out of some old tin sheeting and some gravel raked over from the floor, an angle grinder and 30 year old MIG set that was my grandads - and it stayed that way really up until the latest engine change.


Yes, we have room and some fancier gear now, but they're investments for work as much as anything - even this shed we built ourselves from shipping containers - nothing will stop you doing this even in a garage with hand tools and odds and sods, you just need to get into it  ;-)up
 Hell, my daily driver is getting a complete engine and gearbox change in the middle of the street at the minute!


Found another problem that was giving the intermittent weird noises and cutting the engine out - alternator is goosed and it was tripping the ECU, took it off and it's running like a dream now. I was going to get some video but it was 11pm by the time I was done, I've got hospital tommorow but maybe some better engine video Thursday  :)

39
Members Buggies / Re: A mucky one - racing rail.
« on: January 27, 2019, 09:37:49 PM »
Been chasing down an intermittent, annoying issue for the past month or so where the car would only fire up 50 percent of the time - and sometimes would cut out for no apparent reason, eventually traced it to a dicky cam sensor and some split wiring on the only original part of the cars loom we kept - the coil connectors, doh. Anyway, after taking allsorts off finally found them, repaired 'em and turned the key, boring video but god was I happy!

Sound is a bit funky as the phone clips hard on the audio that close and the exhaust's blowing from the elbow there 'cause it just got slapped on.

https://youtu.be/KJkYWytZyZQ

40
Beach Buggy General Help / Re: Are we sitting comfortably?
« on: January 11, 2019, 03:59:29 AM »
Motodrive are going in ours next, they even tailor them to your body shape as part of the price.

41
Members Buggies / Re: my lads buggy
« on: December 26, 2018, 07:07:26 PM »
We run those and the Fedima's (the feds are better imo) on ours, and given it's race use only they get used hard and hot to the point they're steaming when you come back in - but they're still sketchy on wet concrete/gravel sections even when hot.
 Even switching to forest rally tyres or A/T's gives far more braking power/stability on the hard stuff.

42
Members Buggies / Re: my lads buggy
« on: December 26, 2018, 06:55:07 PM »
Yeah, they're generally van/light truck carcasses to give them enough strength for race abuse - they'll be pretty sketchy on cold wet roads.

43
Members Buggies / Re: my lads buggy
« on: December 25, 2018, 03:52:28 PM »
With Insa turbo's up front on reinforced carcasses...probably 10-12psi, they're meant for much heavier race cars.

44
Members Buggies / Re: A mucky one - racing rail.
« on: December 10, 2018, 01:03:25 PM »
Yes, took a lot of planning and mockups since we're so tight on space up front, making sure the shocks/steering links, etc, clear everything and we can still get enough steering lock.

On the upside ditching the link pins and kingpins for spherical bearings mean that there's no longer any play required in anything like there is to allow linkpins to rotate, etc, so everything can be torqued up tight. Which means no geometery changes from play or as the clearances change through wear.

 Took the opportunity at the same time to revise the front geometery a little more, reducing some of the castor gain, removed some of the mechanical trail and corrected a lot of the scrub offset issues the stock setup has.

45
Members Buggies / Re: A mucky one - racing rail.
« on: December 10, 2018, 02:45:37 AM »
Good news, found some boots that work.
Bad news. Might have cut the front beam, arms and uprights off the car... ;-)(-;

Good news, new ones are being made, already mocked up and ready to go:







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