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Old 30-03-2015
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weejimmy weejimmy is offline
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Default More steering on a BMAX4 III

Hi All,

Does anyone have any advice for getting more front end bite/turn in on a BMAX4 III? Our car is pretty much stock and goes, stops and jumps brilliantly, but the car is lacking lock/steering for the tight indoors astro tracks we race on.

Thanks!
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Old 30-03-2015
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weejimmy weejimmy is offline
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Tyre wise we run Schumacher yellow cut staggers on the front on cut down Yoko wheels and Schu yellow mini spikes on the rear.

I guess we could run a more agressive front tyre, but I dont want to introduce grip roll. It's mainly in the slow speed turns where it seems to lack lock.
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Old 30-03-2015
Allan1875 Allan1875 is offline
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Quote:
Originally Posted by weejimmy View Post
Tyre wise we run Schumacher yellow cut staggers on the front on cut down Yoko wheels and Schu yellow mini spikes on the rear.

I guess we could run a more agressive front tyre, but I dont want to introduce grip roll. It's mainly in the slow speed turns where it seems to lack lock.
Stick a set of 2wd yellow mini spikes stretched across a 4wd front wheel with a 4wd insert and cut the outer and inner row of spikes off. Will give you a more aggresive steering without the grip roll.

Or try the 4wd front cut stagger.
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Old 30-03-2015
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Danny Harrison Danny Harrison is offline
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Shortening the front camber link will make the car a little more pointy
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Old 30-03-2015
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Adam F Adam F is offline
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Try re-drilling the holes for the ball studs on the front hubs and moving them forward into the hub.

Pretty sure there was a video on petit or lmr showing how to do it.
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Old 30-03-2015
mutoid mutoid is offline
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Shorten wheelbase,stiffer rear springs,no roll bar on front can all help for starters.
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Old 31-03-2015
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If you run box standard (so no front roll bar), go a bit lighter on oil. If you do run a front roll bar, take a thinner one or remove completely.
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Old 31-03-2015
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weejimmy weejimmy is offline
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Thanks fellas. Will try a few of those!
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Old 31-03-2015
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neallewis neallewis is offline
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As Allan said, tyres are your main issue here.
Run new 4wd cut staggers on full sized rim, or 2wd mini spikes on full 4wd rim, with inner and outer spikes removed. These will give you much more steering.
I thought 2wd cut staggers were horrible to drive.
Have you tried minipins all round on the astro? front is tuned by removing spikes.

Also how many shock inserts are you running on the front? Too much front droop (or front lift on power) takes away on power steering. You'd normally be running 5 insert washers on the front. This is more than shown on the kit build.
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