a ride on a 77 Rupp Nitro

I just fired up my 77 Nitro 440 after 3 yrs of storage. I though I'd see what she runs like before going through it to get it ready to take on a couple vintage derbies this winter. Seems to run pretty sweet so I think all I need to do is clean and polish it.

Category:

Autos & Vehicles

Tags:

• Rupp
• Rupp Nitro
• Rupp Magnum
• Vintage Snowmobile
• Antique snowmobile
• Roblin MB
• Roblin Manitoba
• Winter Fun
• Snowmobile restoration
• Xenoah
• Xenoah Engine
• Micky Rupp
• Arctic Cat
• Vintage snowmobile derby

[joecobra1234]

nice,id like to upload a vid of taking her out on a lake and giving it a REAL run

[2500vtg]

@joecobra1234 Hi Joe.........I plan on putting some miles on the Nitro this winter and I'll try my best to get a better video posted of it running a little bit faster. I really have to think about buying a helmet cam because this holding the camera with one hand and the bars with the other hand thing is pretty darn awkward.

[roger313111]

Love those Rupps !!

[2500vtg]

Yep, Roger........they are incredibly fun sleds. Too bad they quit building them. I sure wish Rupp, Merc and John Deere had hung in there with the snowmobile business. Those were my three favorite brands of sleds.

[kriegdouch]

just wondering if the motor had reed valves? or just open intake ports. and your opinion on rotary valves, mostly built by rotax. i think they're junk and flood alot

[2500vtg]

@kriegdouch This sled does have a reed valve engine. I really have no experience with the Rotax rotary valved engines, However I know some people who love there R/V Ski Doo engines and they don't seem to have much problems. I can see no reason why a rotary valved motor should experience any more flooding issues than a reed valve or piston port design. If it's flooding, then there's an issue with the carbs or the ignition is weak and unable to fire the mixture or perhaps a compression problem.

[ballixxe]

My father worked at Rupp back in the day and knew Mickey Rupp personally...matter of fact, he probably made this machine!! Cheers!!

[DeadXephos]

This sled brings back memories... Breaking arms, putting me in a concussion I am glad we blew up that piece of shit

[sldl04]

@2500vtg

Winters like the one we're getting this year are why Rupp, Merc, John Deere and Kawasaki got out of snowmobiling. Times were different in the late 70s and early 80s. One or two lean winters pretty much did in many manufacturers...

[yamaharules163]

@2500vtg get a gopro

[yamaharules163]

sweet manitoban rupp

[kenneykole]

@2500vtg '76 nitro was not built by artic cat so the 77 engine are pretty much same as 76 but it improve the performance than 76. '77 nitro have 6 more hp than '76. On 1977 artic cat company help to build for them to keep the rupp going.