Go Back   EcoModder Forum > EcoModding > Hypermiling / EcoDriver's Ed
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 07-03-2014, 11:25 PM   #1 (permalink)
Furry Furfag
 
Baltothewolf's Avatar
 
Join Date: Nov 2013
Location: Apple Valley
Posts: 2,084

Winsight - '00 Honda Insight
90 day: 56.69 mpg (US)

Miaderp - '95 Mazda Miata
90 day: 28.53 mpg (US)
Thanks: 67
Thanked 406 Times in 311 Posts
Does EOC cause M/T wear?

I'm currently having a huge argument with my dad, he seems to think that EOC causes extreme transmission wear because of the bump starting. Is this true? I would like some actual experience claims so I can get my dad off my back haha.

__________________

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 07-03-2014, 11:46 PM   #2 (permalink)
(:
 
Frank Lee's Avatar
 
Join Date: Jan 2008
Location: up north
Posts: 12,624

Blue - '93 Ford Tempo
Last 3: 27.29 mpg (US)

F150 - '94 Ford F150 XLT 4x4
90 day: 18.5 mpg (US)

Sport Coupe - '92 Ford Tempo GL
Last 3: 69.62 mpg (US)

ShWing! - '82 honda gold wing Interstate
90 day: 33.65 mpg (US)

Moon Unit - '98 Mercury Sable LX Wagon
90 day: 21.24 mpg (US)
Thanks: 1,549
Thanked 3,420 Times in 2,148 Posts
Bump starting has no effect on transmission wear. At the worst it might increase clutch wear a skosh, but I doubt it's enough to ever notice or quantify.
__________________


  Reply With Quote
Old 07-03-2014, 11:51 PM   #3 (permalink)
Cyborg ECU
 
California98Civic's Avatar
 
Join Date: Mar 2011
Location: Coastal Southern California
Posts: 5,226

Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 66.37 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
90 day: 3671.43 mpg (US)
Thanks: 1,865
Thanked 1,562 Times in 1,062 Posts
The last 40,000 miles on my car were added using bump starting nearly all the time. I still drive with the original clutch. I did change the transmission, but that was to get taller gearing, not because of any unusual wear. Look up "PaleMelanesian" here on EM and his former car, the palecivic. He drove all bump starting all the time for years in a car with a transmission and clutch virtually identical to yours without any problems. He drives a fit now, but not because of transmission failure.
__________________


See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.

  Reply With Quote
Old 07-03-2014, 11:53 PM   #4 (permalink)
Master EcoModder
 
Join Date: Aug 2010
Location: Philippines
Posts: 2,168
Thanks: 1,723
Thanked 579 Times in 396 Posts
Done right, it should provide very little additional wear beyond merely shifting gears.
  Reply With Quote
Old 07-04-2014, 12:28 AM   #5 (permalink)
Furry Furfag
 
Baltothewolf's Avatar
 
Join Date: Nov 2013
Location: Apple Valley
Posts: 2,084

Winsight - '00 Honda Insight
90 day: 56.69 mpg (US)

Miaderp - '95 Mazda Miata
90 day: 28.53 mpg (US)
Thanks: 67
Thanked 406 Times in 311 Posts
This is exactly what I thought, thanks guys I appreciate it.
__________________

  Reply With Quote
Old 07-05-2014, 02:04 AM   #6 (permalink)
It's all about Diesel
 
cRiPpLe_rOoStEr's Avatar
 
Join Date: Oct 2012
Location: Porto Alegre, Rio Grande do Sul, Brazil
Posts: 7,433
Thanks: 0
Thanked 763 Times in 674 Posts
Bump-starting is absolutely safe for the transmission. I don't understand why many Americans think otherwise...
  Reply With Quote
Old 07-05-2014, 08:37 AM   #7 (permalink)
Master EcoModder
 
Join Date: Sep 2009
Posts: 5,927
Thanks: 877
Thanked 2,018 Times in 1,302 Posts
People used to crank cars by hand. Look at it backwards. Try driving your car with the starter motor. It won't work because the starter motor won't produce enough power.

Getting a car moving with a clutch is exponentially more stressful on components than using the inertia of the vehicles motion to spin the engine over at a few hundred RPM.

It would take literally hundreds of PROPERLY EXECTUED Bump starts to equal one launch to 60 MPH. Moving 3000 pounds instead of rotating 40 or somwhere near that.

The wear is on the shift and clutch actuating mechanisms that have a very long service life. Will you ever replace a clutch due to bump starting?

That depends on how good you are at it and the best are hard to even feel by a passneger.

regards
Mech
  Reply With Quote
Old 07-05-2014, 10:02 AM   #8 (permalink)
Do more with less
 
Join Date: Jul 2010
Location: North Eastern Missouri
Posts: 911

OD - '05 Ford Econoline
90 day: 18.64 mpg (US)

Joetta - '86 Volkswagen Jetta Turbo Oil Burner
TEAM VW AUDI Group
90 day: 49.71 mpg (US)

Benzilla - '85 Mercedes Benz 300D
90 day: 28.08 mpg (US)
Thanks: 57
Thanked 166 Times in 104 Posts
I think bump starting introduces wear to entire drive train. I would rather replace a starter than a clutch.
__________________
"A man is not finished when he is defeated. He is finished when he quits."
Richard M. Nixon


"The reward of suffering is experience."
Harry S. Truman

“There's no way to rule innocent men. The only power any government has is the power to crack down on criminals. Well, when there aren't enough criminals, one makes them. One declares so many things to be a crime that it becomes impossible for men to live without breaking laws.”
Ayn Rand
  Reply With Quote
Old 07-05-2014, 01:14 PM   #9 (permalink)
Master EcoModder
 
Join Date: Aug 2010
Location: Philippines
Posts: 2,168
Thanks: 1,723
Thanked 579 Times in 396 Posts
Additional wear to the clutch is, again, infintesimal. As Old Mechanic says, you are merely accelerating a few dozen pounds of crank, pistons and transmission up to a few hundred rpm rather than putting full load through the clutch.

A bump start at speed is a whole lot less stressful than a 1-2 shift done without lifting or rev matching. And millions of drivers do THAT synchro-stripping maneuver every day...
  Reply With Quote
Old 07-05-2014, 01:59 PM   #10 (permalink)
Furry Furfag
 
Baltothewolf's Avatar
 
Join Date: Nov 2013
Location: Apple Valley
Posts: 2,084

Winsight - '00 Honda Insight
90 day: 56.69 mpg (US)

Miaderp - '95 Mazda Miata
90 day: 28.53 mpg (US)
Thanks: 67
Thanked 406 Times in 311 Posts
I'm confused niky, so you and old mechanic are saying it's no big deal? That's what I'm getting from it.

__________________

  Reply With Quote
The Following User Says Thank You to Baltothewolf For This Useful Post:
jaylhouse (07-07-2014)
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com