From Cambridge University Caving Club - CUCC wiki
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Some possible things to consider: | Some possible things to consider: | ||
*Do we want to mod them so battery packs aren't attached to the drill but can stay in a tacklesack? | *Do we want to mod them so battery packs aren't attached to the drill but can stay in a tacklesack? | ||
| + | **As the drills use lightweight Li-Ion packs, there may be little advantage in shifting the battery packs from the drill to a tacklesack. Apparently the drill+battery weighs 3kg, compared with around 4kg for a Bosch GBH24VRE. [[User:Duncan.collis|Duncan.collis]] 14:06, 9 May 2008 (BST) | ||
| + | **Looking at a picture of these drills, it appears that most of the weight of the machine is out in front, with the battery pack directly below the handle. The battery in this position may provide some balance to the drill, preventing it from being too front-heavy. [[User:Duncan.collis|Duncan.collis]] 14:06, 9 May 2008 (BST) | ||
*We need to make some padded tacklesacks for transporting them underground. | *We need to make some padded tacklesacks for transporting them underground. | ||
| + | **The main purpose of padding is to protect the dry bag the drill is in. First choose good tacklesacks that don't have holes in them! Use some old karrimat, foam floor tiles or knackered wetsuit to make the packing. Pad both inside and outside the drybag. [[User:Duncan.collis|Duncan.collis]] 14:06, 9 May 2008 (BST) | ||
*We can make spare battery packs using some cells from gp batteries. | *We can make spare battery packs using some cells from gp batteries. | ||
*Charging: am I right in thinking solar panels at top camp can only charge 12V or 24V? We can either try to make a transforer, bring a mains adaptor up, or take battery packs down to basecamp for charging. Thoughts? | *Charging: am I right in thinking solar panels at top camp can only charge 12V or 24V? We can either try to make a transforer, bring a mains adaptor up, or take battery packs down to basecamp for charging. Thoughts? | ||
| + | **If you're using the manufacturer's Li-Ion packs, it goes without saying that you shouldn't try charging them on a home-made charger unless it was designed for the purpose by someone who knew what they were doing. [[User:Duncan.collis|Duncan.collis]] 14:06, 9 May 2008 (BST) | ||
| + | **Think very carefully about the safety issues surrounding the use of an inverter to provide mains at the bivi. [[User:Duncan.collis|Duncan.collis]] 14:06, 9 May 2008 (BST) | ||
Revision as of 13:06, 9 May 2008
Current Club Drill
As I understand it the club has an old 24V hammer drill. Anyone know where this is and what state it's in?
Similar question goes for battery packs for this drill - do we want to use some of the GP Batteries cells to make new ones?
New Drills
Makita are very kindly giving us 2 new BHR180 rotary hammer drills. These use 18V battery packs: Some possible things to consider:
- Do we want to mod them so battery packs aren't attached to the drill but can stay in a tacklesack?
- As the drills use lightweight Li-Ion packs, there may be little advantage in shifting the battery packs from the drill to a tacklesack. Apparently the drill+battery weighs 3kg, compared with around 4kg for a Bosch GBH24VRE. Duncan.collis 14:06, 9 May 2008 (BST)
- Looking at a picture of these drills, it appears that most of the weight of the machine is out in front, with the battery pack directly below the handle. The battery in this position may provide some balance to the drill, preventing it from being too front-heavy. Duncan.collis 14:06, 9 May 2008 (BST)
- We need to make some padded tacklesacks for transporting them underground.
- The main purpose of padding is to protect the dry bag the drill is in. First choose good tacklesacks that don't have holes in them! Use some old karrimat, foam floor tiles or knackered wetsuit to make the packing. Pad both inside and outside the drybag. Duncan.collis 14:06, 9 May 2008 (BST)
- We can make spare battery packs using some cells from gp batteries.
- Charging: am I right in thinking solar panels at top camp can only charge 12V or 24V? We can either try to make a transforer, bring a mains adaptor up, or take battery packs down to basecamp for charging. Thoughts?
- If you're using the manufacturer's Li-Ion packs, it goes without saying that you shouldn't try charging them on a home-made charger unless it was designed for the purpose by someone who knew what they were doing. Duncan.collis 14:06, 9 May 2008 (BST)
- Think very carefully about the safety issues surrounding the use of an inverter to provide mains at the bivi. Duncan.collis 14:06, 9 May 2008 (BST)
Do we need some new drill bits?