The 50

**Farmaken** · 7th March 2014, 06:48

Well that sucks big time

**F5 Dave** · 7th March 2014, 08:13

indeed a shame, bad luck bud.

**Dutchee** · 10th March 2014, 17:27

Originally Posted by F5 Dave

indeed a shame, bad luck bud.

talking to Cully before we headed home, he's keen to ride again, and when I pointed out I am two points behind him! I think we're riding in the next meet. will have to see if Craig can join us, and the four of us can battle it out for last place

**cotswold** · 10th March 2014, 18:13

Originally Posted by Dutchee

talking to Cully before we headed home, he's keen to ride again, and when I pointed out I am two points behind him! I think we're riding in the next meet. will have to see if Craig can join us, and the four of us can battle it out for last place

You will struggle to stay with him now the pumper is working almost properly, blame Rick

**Dutchee** · 10th March 2014, 19:23

Originally Posted by cotswold

You will struggle to stay with him now the pumper is working almost properly, blame Rick

tis okay, can just throw my toys, blame my mechanic and head back into retirement.

**cotswold** · 14th March 2014, 12:08

I just stripped out my 50 and have found a couple of issues.

The piston has been clipping the head, the rings have shed their tips and not sure what has happened on the piston. The big end feels fine but the main on the ignition side has movement

**F5 Dave** · 14th March 2014, 15:29

ohh dear. yeah seen that more than once. Or twice. or whenever my MB50 revved to 12,000. Cured by running a piston with 1.2mm rings rather than 1.5. I think I said somewhere 'its all built around the piston you use. I ended up running RD50 pistons, but you can't just slam them in & besides they superseded with another RD & they had 1.5mm so its mute.

Head is only loosley positioned. Head needs to be doweled. On the 100 I just bored two diagonal holes larger & ran some bigger tube. Then you can say the head is in the same place every time. Then you measure squish.

**cotswold** · 15th March 2014, 09:43

am6 rod dimensions
MODEL ROD S.E.EYE ROD CRANKPIN
LENGTH G.P. DIA WIDTH DIA LENGTH

85.00 12/15 12.00 16.00 40.00
APRILIA RS50 & OTHERS

These are the Honda NSR50 rod dimensions
ØA - 22 mm
ØB - 17 mm
C - 80 mm
D - 13,5 mm
E - 13,5 mm
F - 40 mm
ØG - 16 mm
ØH - 28,5 mm
ØI - 16,1 mm
J - 0,8 mm

The crank pin is the same size the aprilia rod is 5mm longer but the deck height is longer on the aprilia piston, should I take a punt and buy an Aprilia rod in ?

**RMS eng** · 19th March 2014, 20:09

Originally Posted by F5 Dave

ohh dear. yeah seen that more than once. Or twice. or whenever my MB50 revved to 12,000. Cured by running a piston with 1.2mm rings rather than 1.5. I think I said somewhere 'its all built around the piston you use. I ended up running RD50 pistons, but you can't just slam them in & besides they superseded with another RD & they had 1.5mm so its mute.

Head is only loosley positioned. Head needs to be doweled. On the 100 I just bored two diagonal holes larger & ran some bigger tube. Then you can say the head is in the same place every time. Then you measure squish.

Jason did some work on your RS frame at last,made some motor mounts for my RG50.tried to put up a new post but it went missing so i put it on here,

**koba** · 19th March 2014, 20:25

Originally Posted by RMS eng

Jason did some work on your RS frame at last,made some motor mounts for my RG50.tried to put up a new post but it went missing so i put it on here,

That is really pretty.

What is with this shit, Mr mystery never-race man and some NZ based buckets?

**jasonu** · 20th March 2014, 15:14

Originally Posted by koba

That is really pretty.

What is with this shit, Mr mystery never-race man and some NZ based buckets?

It is as close to Buckets as I can get from here...
Keeps me amused.

**F5 Dave** · 20th March 2014, 15:28

Well if they finished the 50, spanked a few more hp out of it & put the broken old man building it on top of it, I suspect he might frighten most of the field.

**jasonu** · 20th March 2014, 15:43

Originally Posted by F5 Dave

Well if they finished the 50, spanked a few more hp out of it & put the broken old man building it on top of it, I suspect he might frighten most of the field.

and himself.....

**mr bucketracer** · 20th March 2014, 16:07

jasons bike is like the never ending story lol . better just to get a play station bucket gp game and go on line

**husaberg** · 20th March 2014, 16:15

Originally Posted by cotswold

am6 rod dimensions
MODEL ROD S.E.EYE ROD CRANKPIN
LENGTH G.P. DIA WIDTH DIA LENGTH

85.00 12/15 12.00 16.00 40.00
APRILIA RS50 & OTHERS

These are the Honda NSR50 rod dimensions
ØA - 22 mm
ØB - 17 mm
C - 80 mm
D - 13,5 mm
E - 13,5 mm
F - 40 mm
ØG - 16 mm
ØH - 28,5 mm
ØI - 16,1 mm
J - 0,8 mm

The crank pin is the same size the aprilia rod is 5mm longer but the deck height is longer on the aprilia piston, should I take a punt and buy an Aprilia rod in ?

Had a look through here at the pistons and rods?
http://www.pvlsverige.se/vrm/index/index22.html