First test ride after refit ( Moved from Ride Reports )

Are ya having a problem with your rig? We'll try to help. Share your tech tips and experiences here. Dr. Billy Glaser, author of the "Unofficial 750 Ural Service Manual" site myural.com, is moderating this section.
Forum rules
Here is the place for you to ask questions about or share your experiences about servicing or repairing your Ural or Dnepr. Please post topics concering modifications or accesories in the "Modifications and Acessories" section. Please post oil related questions in the "Oil Threads" section.
Post Reply
User avatar
Goodspeed T. B.
New Member
New Member
Posts: 14
Joined: Sat Feb 01, 2020 7:04 pm
Location: Queen Creek AZ
Contact:

First test ride after refit ( Moved from Ride Reports )

Post by Goodspeed T. B. » Mon Apr 06, 2020 2:41 pm

Normally with every motorcycle I’ve owned in the past I treat it like my baby, making sure to be gentle, keeping it clean, gawd forbid I scratch it. With my Ural, I don’t know seems like the opposite, “ I wonder what abuse I can put this bike through today?”

I do have a question I think I know the answer to, in my last post I talked about my new exhaust system and readjusting the carburetors. The bike seems to run great near my home near Phoenix, but with the last pictures you’ll see here. I went up into the mountains I got to a certain limit and the bike just seems like it lost all power. I turned around and started heading back down in elevation and the problem disappeared. I’m thinking I might need slightly smaller jets ?
You do not have the required permissions to view the files attached to this post.
"There's no such thing as the unknown, only things temporarily hidden, temporally not understood"


Current bikes/toys:
2011 Gear Up
1982 Delorean DMC-12

Former bikes/toys:
2013 Honda Goldwing F6B
2006 Kawasaki Vulcan Mean Streak 1600
1997 Ural Deco Classic 650

rivers
Hero of the Soviet Union - 2020
Hero of the Soviet Union - 2020
Posts: 9668
Joined: Sat Jul 24, 2010 10:04 pm
Location: 48*N, 122*W

Re: First test ride after refit

Post by rivers » Mon Apr 06, 2020 4:13 pm

2011GU? What's your current jetting...orig or? What elevation was it acting up? Stock factory jetting in the CVK's should be fine up to near 8,000 ft unless you're carrying a severe cargo load. I'd suspect previous owner fattened up the stock jetting or you need an overdue tune-up. I'd check your valve clearance and your ign timing.
Joe
014 GU
"I'm lost but I'm making good time."

Marine Corps Codu
Hero of the Soviet Union - 2020
Hero of the Soviet Union - 2020
Posts: 282
Joined: Mon Jan 21, 2019 7:05 pm
Location: Camano Island, WA

Re: First test ride after refit

Post by Marine Corps Codu » Mon Apr 06, 2020 4:52 pm

Can't help you with your question, but I had the same thing happen to my 2018 Gear Up (fuel injected) last summer. Never figured it out. But will try again this summer IF this virus situation lessens.
Keith Birkhofer
Marine By Choice
Current 2018 Gear Up
Former Bikes:
1947 Cushman Motor Scooter
1958 Cushman/Sears Motor Scooter
1964 Yamaguchi
1965 Honda 250
1968 KZ1000
1960 Honda 55 (2 of them)
2002 Honda Gold Wing GL1800
2006 Ural Patrol
2005 BMW R1200GS
2018 Ural Gear Up

User avatar
S 854
Commissar
Commissar
Posts: 5055
Joined: Mon Dec 03, 2007 8:44 am
Location: Big Sky Country

Re: First test ride after refit

Post by S 854 » Mon Apr 06, 2020 6:12 pm

Heat buildup in an air cooled engine (or any engine for that matter) will rob you of power... my guess is, we’re more susceptible than most to rapid heat escalation...

Several years ago I witnessed this first hand during Spring in Moab... one of our members was out riding in the back country... being followed by his wife who was riding two wheels... his ‘08 GearUp became “stuck” at the bottom of a ravine... he tried getting up the hill many time before commandeering his wife’s bike to “go for help”...

IIRC, about four or five of us jumped on our rigs and followed him back to his rig... which had been sitting for 30 or 40 minutes... he jumped on his rig, fired it up and drove it right up out of the ravine without any assistance from any of his “rescuers”... the only thing that had changed was the engine had time to cool down...
'07 Arctic: The Russian Raucous Ship

Things turn out best for the people who make the best of the way things turn out...

User avatar
chaos2
Order of Victory
Order of Victory
Posts: 5199
Joined: Sun Apr 29, 2012 12:58 am
Location: sw ohio

Re: First test ride after refit

Post by chaos2 » Mon Apr 06, 2020 6:23 pm

you will lose power at high elevations, even with correct jetting. There's just less air up there. If it cleared up when you descended and you're not planning on living up there I wouldn't worry about it.
Past afflictions include limey motocars and bikes, R60/2, R65ls, & a Citroen.
Now a DB Haanjo and Canyon CF SL Endurace, '87 K75s,
and a rusty 2012 GU bought new
dual K&N cones on homemade intake, 40/137.5
Raceway needles, Modtop exhaust, E starter delete
$29 VW Hydraulic steering dampener

User avatar
Manscout
Hero of the Soviet Union - 2020
Hero of the Soviet Union - 2020
Posts: 1261
Joined: Wed Mar 02, 2016 8:05 pm
Location: Gillette, Wy

Re: First test ride after refit

Post by Manscout » Thu Apr 09, 2020 1:19 pm

Both of S854 and chaos2 comments are true statements.

I actually carry a spare cup in the mountains and dump water on the jugs to cool it down when I need to climb out of a ravine.
"It goes nowhere fast, and everywhere cool".

2011 Ural Patrol
Gillette, Wy
Instagram: manscoutwyo

User avatar
Peter Pan
Hero of the Soviet Union - 2020
Hero of the Soviet Union - 2020
Posts: 3593
Joined: Fri Jan 31, 2014 11:30 pm
Location: Heredia, Costa Rica/new speed record 115kmh by son

Re: First test ride after refit

Post by Peter Pan » Thu Apr 09, 2020 1:30 pm

think about a foam air filter.... at least with that I was able to cross Cerro de la Muerte more then once. 3300m- 11.820ft. Before i used to have tough times having to rest and cool down up to 8 times for a 28km climb from 460m to 3300m.
By the way with the foam filter I get through tropical down poor too :P
Sophie Travelair = Patrol 2013
8 weeks 12.000km Oregon-Alaska-Oregon
With a DIY foam air filter the rig runs well even in tropical rain = :moto:
Final drives: 1. at 5000km, 2. at 34.000km(+friction plates) 3. at 42.386km
transmission: 1. 40.000km. 2. installed
Engine: 1. 43.388km crank replacement: Back on the road since 23.Okt.2019 :party:

The Avatar are 2 rice grains stating life's essence:
"The most important you cannot see!"
=> Attitude makes the difference!

User avatar
tgtrotter
Commissar
Commissar
Posts: 849
Joined: Sun Jul 26, 2015 5:41 pm
Location: Southside of The Grapevine, 91384

Re: First test ride after refit

Post by tgtrotter » Sun Apr 12, 2020 10:00 pm

Manscout wrote:
Thu Apr 09, 2020 1:19 pm
Both of S854 and chaos2 comments are true statements.

I actually carry a spare cup in the mountains and dump water on the jugs to cool it down when I need to climb out of a ravine.

+1 to all three. I have experienced what Chaos2 and S854 describe.


I've read on here too that in the Rockies a member would pull his air cleaner top off or loose to let more air in. CV carbs or not. That led to more discussion....

I think CV carbs have exponential limits but still have an advantage over slides when it comes to altitude.

The opposite is my old 650 would be hard to start after riding. I learned the only way it would start is if I manually held the butterfly on top of the air cleaner open. Yes it had a butterfly there. Prob a jet, clean carb, compression, valve issue but at least I got it going.
2007 Woodland Green Patrol :foilhead:
2004 FLTRI :machinegun:
1992 Trek 830 :P

User avatar
Desantnik-VDV
Comrade General
Comrade General
Posts: 765
Joined: Sun Dec 16, 2007 5:21 pm
Location: Los Angeles

Re: First test ride after refit ( Moved from Ride Reports )

Post by Desantnik-VDV » Mon Apr 13, 2020 12:43 pm

I treat all my bikes like babies, keep them clean, god forbid scratching...specially Urals, like antiques :D

Tonto national forest elevation is about 7400ft...
I also noticed the bike has some kind of temp gauge installed(wire under the spark plug)?

What was the temps going uphill, Goodspeed?

1+ on high temp, as well as could be rust/dirt clogging petcock when low on gas, going uphill...
All other suggestions for tune up must be checked and considered first.
Alex
2007 GearUp - BMD (Боевая Машина Десанта)

The rest is just a History.

siberman1
Hero of the Soviet Union - 2020
Hero of the Soviet Union - 2020
Posts: 3069
Joined: Mon Sep 30, 2013 5:50 pm
Location: MST/MDST

Re: First test ride after refit ( Moved from Ride Reports )

Post by siberman1 » Mon Apr 13, 2020 4:44 pm

What do you expect? Some of those places you were on were near vertical ! :lol:

YMMV
Sent from my laptop using OEM fingers, ordinary Mouse, and LCD-screen
2014 полынь зеленый гU
Сибирь Экспресс #2

Zero payments

Post Reply