Ofna Picco Sport

[jcchase]

My Dad bought one of these engines off of ebay. I need help figuring out what clutch nut he needs to use. Here is a picture of the engine. I took the thick silver piece behind the tappered cone off.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5992962011

does he need to use this one?

http://www.acehardwarehobbies.com/2.2/catalog/product_info.php?cPath=20_106&products_id=2487

or this one?

http://www.acehardwarehobbies.com/2.2/catalog/product_info.php?cPath=20_106&products_id=2488

thank you for the help.

jcchase

 

[olds97_lss]

Do you have a better photo than what's on ebay? I checked www.ofna.com, but didn't see the engine. The pic from ebay isn't clear enough to tell what kind of shaft it has.

It's more than likely a SG shaft which this nut will work for: http://www.acehardwarehobbies.com/2.2/catalog/product_info.php?cPath=20_106&products_id=2488
But without a clear pic, I really can't tell. I think most 21 buggy engines run a SG shaft.

 

[jcchase]

It has a real short shaft. I put one of my clutch assemblies on it and it covered almost the whole shaft.

jcchase

 

[olds97_lss]

No better pic?

 

[jcchase]

http://www.nitroreview.com/TheDatabase/engineimages/OfnaPiccoSport.jpg

Hope this helps.

jcchase

 

[olds97_lss]

Yep. It's a standard threaded crankshaft. You need one of these: http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXABA2&P=7
Or one like it. I'm not sure of the thread size though. I don't know if it's the same as 15 sized engines or not. But you need one that will support a 21 sized clutchbell. They are thicker front to back which requires a longer stub.

Wish I could be more help... But I've never had a 21 engine that didn't have a SG pilot type shaft.

BTW, I found a parts explosion/manual for that engine: http://www.ofna.com/pdf/eng-picco21-sport.pdf