Stus-List Re: Motor Mounts
When I replaced Calypso's engine mounts I also needed to improve how the bolts were fastened to the engine beds. Calypso's engine beds are fiberglass over wood (for height and width) with a steel bar laminated on top of the wood under approx. 1/2" of fiberglass. I was able to go up one size of bolt by re-drilling and re-tapping. IIRC I did use a heli-coil on several bolt locations. I also had four SS "U" brackets manufactured with the intention to use them to overbuild the engine/boat connection. What I determined was the extra height would mess up the engine/prop shaft alignment enough that I would need to slot the engine beds and inset the "U" brackets. I chose not to do that. I still have the brackets if any lister's are interested. Martin DeYoung Calypso 1971 C&C 43 Port Ludlow/Seattle From: Rob Hamlin via CnC-List Sent: Friday, March 10, 2023 2:17 AM To: Stus-List Cc: Rob Hamlin Subject: Stus-List Motor Mounts Hi I’m replacing the motor mounts C&C 37+, Yanmar 3HM35F motor. Removed the two back mounts, looks like they are held in by machine bolts into bed. The front two bolts holding each mount were stripped. Question, anyone else came across this? thoughts on solution to re-fasten/bed the bolts. -Rob Please show your appreciation for this list and the Photo Album site and help me pay the associated bills. Make a contribution at: https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.paypal.me%2Fstumurray&data=05%7C01%7C%7C66fd5f7033f84596ed1308db2150bf40%7C84df9e7fe9f640afb435%7C1%7C0%7C638140403016040616%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=mnkCe8XLgPRpfuEFlb8F1j8%2B%2FZT4h4lMvrPBebGlGp0%3D&reserved=0 Thanks for your help. Stu Please show your appreciation for this list and the Photo Album site and help me pay the associated bills. Make a contribution at: https://www.paypal.me/stumurray Thanks for your help. Stu
Stus-List Re: Motor Mounts
Like Joe said, angle iron. The diesel in my 35-1 is mounted on angles bolted through the rails. 1600 hours and no issues. Another option is have a shop fabricate a channel and install it over the rails through bolted. Look at stainless toggle bolts or Twist-Tee anchor bolts. If you drill the hole large, install one of those, hold it in place and refill the hole around the anchor bolt. However, that would require lifting the engine over the protruding bolt. Much easier putting a bolt into a thread hole than lifting an engine over a bolt. Not sure I would like a Heli-Coil or E-Z Lok here with the vibration. But it might work. -- Dennis C. Touche' 35-1 #83 Mandeville, LA Please show your appreciation for this list and the Photo Album site and help me pay the associated bills. Make a contribution at: https://www.paypal.me/stumurray Thanks for your help. Stu
Stus-List Re: Motor Mounts
Yes! That would be a great option as well, if a larger bolt size isn't possible for re-tapping, then just drill out enough for the heli-coil of the right bolt size and good to go. Cheers, Jeff Nelson Muir Caileag C&C 30 - 549 Armdale Y.C. On 2023-03-10 09:21, Joel Aronson via CnC-List wrote: Or a heli-coil Joel On Fri, Mar 10, 2023 at 8:11 AM Rob Hamlin via CnC-List wrote: Thanks Jeff that was my other question, what’s under the fiberglass. Yes I was able to get the bolts out. Good thought on retapping and larger size. -Rob Sent from my iPhone > On Mar 10, 2023, at 7:43 AM, Jeff Nelson via CnC-List wrote: > > Well that's going to be fun. Have you been able to take the old bolts out, and is it possible to tap a new thread > next size up? That would be easiest solution. Otherwise, Major re-construction in your future, I see. > Good news, If yours is like my 30, it is a big mass of fiberglass topped with a steel plate. Maybe you could wap > it with a new steel plate and through drill it from the sides to secure it. Otherwise grinder and lots of new > fiberglass. > > Cheers, > Jeff Nelson > Muir Caileag > C&C 30 - 549 > Armdale Y.C. Please show your appreciation for this list and the Photo Album site and help me pay the associated bills. Make a contribution at: https://www.paypal.me/stumurray Thanks for your help. Stu
Stus-List Re: Motor Mounts
Or a heli-coil Joel On Fri, Mar 10, 2023 at 8:11 AM Rob Hamlin via CnC-List < cnc-list@cnc-list.com> wrote: > Thanks Jeff that was my other question, what’s under the fiberglass. > > Yes I was able to get the bolts out. Good thought on retapping and larger > size. > > -Rob > > Sent from my iPhone > > > On Mar 10, 2023, at 7:43 AM, Jeff Nelson via CnC-List < > cnc-list@cnc-list.com> wrote: > > > > Well that's going to be fun. Have you been able to take the old bolts > out, and is it possible to tap a new thread > > next size up? That would be easiest solution. Otherwise, Major > re-construction in your future, I see. > > Good news, If yours is like my 30, it is a big mass of fiberglass topped > with a steel plate. Maybe you could wap > > it with a new steel plate and through drill it from the sides to secure > it. Otherwise grinder and lots of new > > fiberglass. > > > > Cheers, > > Jeff Nelson > > Muir Caileag > > C&C 30 - 549 > > Armdale Y.C. > > > >> On 2023-03-10 06:17, Rob Hamlin via CnC-List wrote: > >> Hi > >> I’m replacing the motor mounts C&C 37+, Yanmar 3HM35F motor. > >> > >> Removed the two back mounts, looks like they are held in by machine > bolts into bed. The front two bolts holding each mount were stripped. > >> > >> Question, anyone else came across this? thoughts on solution to > re-fasten/bed the bolts. > >> > >> -Rob > >> Please show your appreciation for this list and the Photo Album site > and help me pay the associated bills. Make a contribution at: > >> https://www.paypal.me/stumurray > >> Thanks for your help. > >> Stu > > Please show your appreciation for this list and the Photo Album site and > help me pay the associated bills. Make a contribution at: > > https://www.paypal.me/stumurray > > Thanks for your help. > > Stu > Please show your appreciation for this list and the Photo Album site and > help me pay the associated bills. Make a contribution at: > https://www.paypal.me/stumurray > Thanks for your help. > Stu -- Joel Please show your appreciation for this list and the Photo Album site and help me pay the associated bills. Make a contribution at: https://www.paypal.me/stumurray Thanks for your help. Stu
Stus-List Re: Motor Mounts
I've not taken one (engine stringer) apart, but in other areas that I have inspected on mine, there is fiberglass and more fiberglass... well over an inch thick in some areas. I guess back then they were not sure how much was enough... You may find some epoxy saturated plywood...but I doubt it. Which is actually good news as you can grind it out and glue it back together just time and really messy effort in a small spaceif you have to. Try the re-tapping 1st. Hope it all works out. Cheers, Jeff Nelson Muir Caileag C&C 30 - 549 Armdale Y.C. On 2023-03-10 09:11, Rob Hamlin wrote: Thanks Jeff that was my other question, what’s under the fiberglass. Yes I was able to get the bolts out. Good thought on retapping and larger size. -Rob Sent from my iPhone On Mar 10, 2023, at 7:43 AM, Jeff Nelson via CnC-List wrote: Well that's going to be fun. Have you been able to take the old bolts out, and is it possible to tap a new thread next size up? That would be easiest solution. Otherwise, Major re-construction in your future, I see. Good news, If yours is like my 30, it is a big mass of fiberglass topped with a steel plate. Maybe you could wap it with a new steel plate and through drill it from the sides to secure it. Otherwise grinder and lots of new fiberglass. Cheers, Jeff Nelson Muir Caileag C&C 30 - 549 Armdale Y.C. On 2023-03-10 06:17, Rob Hamlin via CnC-List wrote: Hi I’m replacing the motor mounts C&C 37+, Yanmar 3HM35F motor. Removed the two back mounts, looks like they are held in by machine bolts into bed. The front two bolts holding each mount were stripped. Question, anyone else came across this? thoughts on solution to re-fasten/bed the bolts. -Rob Please show your appreciation for this list and the Photo Album site and help me pay the associated bills. Make a contribution at: https://www.paypal.me/stumurray Thanks for your help. Stu Please show your appreciation for this list and the Photo Album site and help me pay the associated bills. Make a contribution at: https://www.paypal.me/stumurray Thanks for your help. Stu Please show your appreciation for this list and the Photo Album site and help me pay the associated bills. Make a contribution at: https://www.paypal.me/stumurray Thanks for your help. Stu
Stus-List Re: Motor Mounts
Thanks Jeff that was my other question, what’s under the fiberglass. Yes I was able to get the bolts out. Good thought on retapping and larger size. -Rob Sent from my iPhone > On Mar 10, 2023, at 7:43 AM, Jeff Nelson via CnC-List > wrote: > > Well that's going to be fun. Have you been able to take the old bolts out, > and is it possible to tap a new thread > next size up? That would be easiest solution. Otherwise, Major > re-construction in your future, I see. > Good news, If yours is like my 30, it is a big mass of fiberglass topped with > a steel plate. Maybe you could wap > it with a new steel plate and through drill it from the sides to secure it. > Otherwise grinder and lots of new > fiberglass. > > Cheers, > Jeff Nelson > Muir Caileag > C&C 30 - 549 > Armdale Y.C. > >> On 2023-03-10 06:17, Rob Hamlin via CnC-List wrote: >> Hi >> I’m replacing the motor mounts C&C 37+, Yanmar 3HM35F motor. >> >> Removed the two back mounts, looks like they are held in by machine bolts >> into bed. The front two bolts holding each mount were stripped. >> >> Question, anyone else came across this? thoughts on solution to >> re-fasten/bed the bolts. >> >> -Rob >> Please show your appreciation for this list and the Photo Album site and >> help me pay the associated bills. Make a contribution at: >> https://www.paypal.me/stumurray >> Thanks for your help. >> Stu > Please show your appreciation for this list and the Photo Album site and help > me pay the associated bills. Make a contribution at: > https://www.paypal.me/stumurray > Thanks for your help. > Stu Please show your appreciation for this list and the Photo Album site and help me pay the associated bills. Make a contribution at: https://www.paypal.me/stumurray Thanks for your help. Stu
Stus-List Re: Motor Mounts
Well that's going to be fun. Have you been able to take the old bolts out, and is it possible to tap a new thread next size up? That would be easiest solution. Otherwise, Major re-construction in your future, I see. Good news, If yours is like my 30, it is a big mass of fiberglass topped with a steel plate. Maybe you could wap it with a new steel plate and through drill it from the sides to secure it. Otherwise grinder and lots of new fiberglass. Cheers, Jeff Nelson Muir Caileag C&C 30 - 549 Armdale Y.C. On 2023-03-10 06:17, Rob Hamlin via CnC-List wrote: Hi I’m replacing the motor mounts C&C 37+, Yanmar 3HM35F motor. Removed the two back mounts, looks like they are held in by machine bolts into bed. The front two bolts holding each mount were stripped. Question, anyone else came across this? thoughts on solution to re-fasten/bed the bolts. -Rob Please show your appreciation for this list and the Photo Album site and help me pay the associated bills. Make a contribution at: https://www.paypal.me/stumurray Thanks for your help. Stu Please show your appreciation for this list and the Photo Album site and help me pay the associated bills. Make a contribution at: https://www.paypal.me/stumurray Thanks for your help. Stu
