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Old 04-29-2009, 03:46 PM   #1
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Default Converting a platinum .28 into a bumpstart engine

I just ordered a backplate...Unfortunately I have the PS crankshaft. I decided not to order a non pull crankshaft and shave the ps part of the crankshaft off. Does anyone have any information on this?

I need advice
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Old 04-29-2009, 04:21 PM   #2
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anyone?
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Old 04-29-2009, 10:04 PM   #3
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I converted my .18 into a non pull start

TAKE YOUR ENGINE APART do not do it with the crank still in. the shavings are not good for the internals

just take out the crank and dremel out the pin.

i kind of wish i had pull start though. sure you get more rpm/power, but you can't start your rig anywhere, and have to haul around box/battery. having a PS would be nice

what motor anyway?
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Old 04-30-2009, 03:44 AM   #4
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I'm not sure of the part number but the Platinum .21XP back plate should fit. They use the same case just different bore/stroke I believe.

http://www.dynamiterc.com/Products/D...rodID=DYNP5384

If it don't work I'll paypal the $12 to you jbusch for leading you in the wrong direction. If I were in that situation that's the part I'd order. Maybe someone else can chime in on this one.
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Old 04-30-2009, 08:08 AM   #5
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Call the Manufacturer.
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Old 04-30-2009, 02:47 PM   #6
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hi you can just cut the small pin or get a backplate for a losi 427 or sportwerks pullstart eliminator backplate it has the groove for the pin.
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Old 04-30-2009, 08:19 PM   #7
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The sports werks will not work....the platinum have a different size if it was a mach 427 i would do it...but this is the platinum I ordered the platinum backplate for the .21/.28 motor. It will work. I just need to do some cutting
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Old 05-01-2009, 01:21 AM   #8
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sounds like you've already tried the Mach 427 backplate? Dynamite has a backplate for the Platinum 28 and I think it's the same part number as the Platinum 21 backplate, just labeled different.

Oh here ya go. both Platinum engines listed for those who were wondering.
http://www.dynamiterc.com/Products/D...rodID=DYNP5314
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Old 05-01-2009, 03:57 AM   #9
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hi i have the platinum 28 with the sportwerks backplate and it works just fine.
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