EC300 Supermoto conversion

[motopsycho87]

Small update, was completely wrong on front wheel bearings,

25x42x9 was the size I bought in the send, doubled up on both sides. Going to make the internal spacer tomorrow, machine down the hub, brake disc, and new sprocket (disc and sprocket require countersunk bolts).

Can't wait!!

[Diggs345]

Originally Posted by WAZ

I've just done a similar conversion to my EC300, but with Aprilia RS125 wheels. I originally started off with Bandit 400 wheels but they were just too much work to fit. If I can work out how to post pics, there should be a photo of mine below!

How much work was it to get the Aprilia wheels in there .

[WAZ]

Originally Posted by Diggs345

How much work was it to get the Aprilia wheels in there .

Quite a bit, mainly on the rear. The sprocket carrier needed a lot of machining to fit. I also needed to take 2.5mm off the hub on the brake side of the rear wheel, and the same from the disc mounting face. This allowed me to use the Aprilia disc and the GG caliper. The front only needed a couple of mm from the disc side of the hub to line up.

[Diggs345]

Originally Posted by WAZ

Quite a bit, mainly on the rear. The sprocket carrier needed a lot of machining to fit. I also needed to take 2.5mm off the hub on the brake side of the rear wheel, and the same from the disc mounting face. This allowed me to use the Aprilia disc and the GG caliper. The front only needed a couple of mm from the disc side of the hub to line up.

Thanks , not an easy fit then

[Harry]

Those Aprilia wheels look great.

[motopsycho87]

That was a pain in the ass! Report soon

[motopsycho87]

Righty,

Front wheel

TZR125 1990 - 1992

267mm front disc machined to 260mm


Rear Wheel

GS500

250mm rear disc machined to 220mm
Cush drive hub machined flush with sprocket
Sprocket bolts countersunk for clearance

Everything else was just spacers and bearings

[WAZ]

Looks good mate. I fitted a Polisport YZ supermoto mudguard to mine, a good match for the GG blue.

[Anders]

My son Fredrik's 08 Ec300 Racing with 2010 (?) black plastic and stickers. He bought some seconhand 17" wheels locally. Luckily, they appear to be OEM GG wheels so the conversion was pretty straight forward. He uses BT090 tires.
The fron brake setup is a 320mm brake disk, 6-pot ISR caliper and Brembo radial master cylinder.





Sent fra min GT-I9505 via Tapatalk

[Capz85]

Originally Posted by motopsycho87

Small update, was completely wrong on front wheel bearings,

25x42x9 was the size I bought in the send, doubled up on both sides. Going to make the internal spacer tomorrow, machine down the hub, brake disc, and new sprocket (disc and sprocket require countersunk bolts).

Can't wait!!

I'm looking to use these 25x42x9 bearings, I was just going to use one each side but I see you said you doubled up, did you have to modify the hub????